CN105197633B

CN105197633B - Sheet feeding-device, possess its original document feeder and image processing system

Info

Publication number: CN105197633B
Application number: CN201510324963.1A
Authority: CN
Inventors: 村田卓朗
Original assignee: Kyocera Document Solutions Inc
Current assignee: Kyocera Document Solutions Inc
Priority date: 2014-06-20
Filing date: 2015-06-12
Publication date: 2017-06-20
Anticipated expiration: 2035-06-12
Also published as: US9670019B2; CN105197633A; JP5987023B2; JP2016005976A; US20150368056A1

Abstract

The present invention relates to a kind of sheet feeding-device, placement sensor comprising paper tray, containing actuator, the sheet feed section for carrying out paper supply, for detecting the feed in sensor that paper is sent out from paper tray, and detect paper is whether there is on paper tray and is detected whether by the control unit of paper supply based on feed in sensor based on sensor is placed.Before each intermittent paper supply starts, control unit confirms to place the output of sensor, in the case of not having paper on paper tray is detected, makes sheet feed section terminate to retry treatment, does not detect and is blocked without paper supply.

Description

Sheet feeding-device, possess its original document feeder and image processing system

Technical field

The present invention relates to a kind of sheet feeding-device, original document feeder, image processing system, it is detected by sensor Placement paper is whether there is, when paper supply is not formed, between retry treatment and repeatedly carrying out paper supply action again with stipulated number Having a rest property paper supply.

Background technology

In the image processing system as compounding machine, duplicator, printer, FAX devices, for example, will as original copy this The paper of sample places (mounting) in assigned position, rotates paper supply rotary body, carries out the paper supply of paper.Herein, due to rotation The abrasion of body and the paper easily main cause such as skidding, even if rotation paper supply rotary body, there is also the situation that paper is not sent. Therefore, in image processing system etc., it is sometimes provided with following function：After temporarily stopping paper supply rotary body, enter again That exercises the rotation of paper supply rotary body retries treatment.

For example, as typical sheet carrying device, it is known that following sheet feeding, it is loaded to sheet material, supply, The sheet material being supplied to is detected on transport road, from starting paper supply to detecting the time of paper more than the predetermined time When, perform paper supply and retry, stipulated number can be arbitrarily set, can perform and retry to set point number.By the structure, according to confession The coefficient of friction of paper paper or the state of wear of paper feed roller, arbitrarily set stipulated number, to hair after execution is retried to its number of times Raw blocking is judged, thus wants to eliminate unnecessary plugging handling.

The content of the invention

(1) technical problem to be solved

Generally, it is provided with for detecting whether the paper of such as original copy to be placed on the placement detection sensing of assigned position Device.For example, in original document feeder, based on the output of the placement detecting sensor, can interpolate that to be placed with original copy In the state of, if proceeding by the operation for reading original copy, original document feeder is conveyed and put one by one to reading position The original copy put.Also, based on the output of detecting sensor is placed, if detecting the original copy being placed without stopping is former The paper supply action of original text.

Herein, in detecting sensor is placed, exist and use the situation of the placement detecting sensor comprising actuator. Actuator is with paper holding movable (for example, decline or rotate), if the paper placed is without return initial position (base Level is put, and does not have position during paper).Also, by optical sensor etc., detect the change of the position of actuator.If sensing The output valve of device is in as the output valve interval without placement paper process, then be judged as that placed paper and (do not have , without residue), if output when being placed with paper, then it is judged as being placed with paper.

But, position when there is actuator to without paper returns to the situation of slow (bad).For example, in the presence of following feelings Condition：Force for making actuator return to the reinforcing part (such as spring) of initial position (reference position) weakens in use. Furthermore, it is also possible in the presence of making the action of actuator become not smooth situation by dust or tiny rubbish.If actuator is returned Return slowly, then the position of actuator is back to reference position (position during without paper), it is necessary to the time.So, then in the presence of as follows Situation：Based on the output valve for placing detecting sensor, untill the moment until being confirmed whether to be placed with paper, actuator Position do not return to reference position yet, thus while place paper without but error detection is also to remain the paper placed .

For example, in the case where original copy is read, in operation way, to whether remaining original copy (whether should be to next Original copy paper supply) confirmed.In the presence of following situation：Although actually having sent out all original copys at the confirmation moment, if caused The return of dynamic device is slow, then be erroneously detected as the original copy being also placed.In this case, will be deemed as also needing to carry out paper supply, So as to carry out paper supply action to non-existent original copy.

Even if retry, but it is due to being practically without original copy therefore last also by next without paper supply blocking as there occurs Treatment.If occurring to be blocked without paper supply, it is required that user carries out opening the operation of some plugging handlings such as lid, it is cumbersome.

So, there are the following problems：When using the sensor comprising actuator to detect whether to be placed with original copy, because causing Dynamic device is erroneously detected slowly to the return of reference position, occurs to be blocked without paper supply.

In addition, it is not known that the details of the sensor of detection paper, so as to not know either with or without using actuator.Cause This, for the problem caused by the slow motion of actuator, can not be solved by past technology.

The present invention in view of it is above-mentioned pass by technology problem points and complete, by the sensor comprising actuator come When detecting whether to be placed with paper, without using new, special sensor, can just reduce and cause because of the error detection of sensor The unnecessary generation for retrying treatment or being blocked without paper supply.

(2) technical scheme

In order to solve the above-mentioned technical problem, the sheet feeding-device of technical scheme 1 comprising paper tray, place sensor, Sheet feed section, delivery section, feed in sensor and control unit, the paper tray place one or more paper；It is described to place sensing Device includes the actuator acted placement paper, its position according to actuator and exports difference, and is arranged at detection paper Open the position placed；The sheet feed section rotates paper supply rotary body so as to carry out the confession of paper being placed on the paper tray Give；The paper that the delivery section conveying is supplied by the sheet feed section；The feed in sensor is used for the confession according to the sheet feed section Paper motion detection paper is sent out from the paper tray；The control unit is based on the size inspection of the output valve of the placement sensor Survey on the paper tray and whether there is paper, whether the output based on the feed in sensor is supplied according to paper supply motion detection paper Give, the rear end for detecting paper if the feed in sensor confirms the output valve of the placement sensor if, is being judged as The paper supply that making the sheet feed section when having paper carries out lower one page is acted, and the control unit is in the output based on the feed in sensor Detect when there is no paper supply, carry out retrying treatment, even if sheet feed section repeats the intermittent paper supply of stipulated number, until paper supply sensing Device is able to detect that paper, and the intermittent paper supply refers to carry out paper supply action again after paper supply action is stopped, each The intermittent paper supply confirms the output for placing sensor before starting, carrying out the intermittence of the stipulated number In the case that paper supply can't but detect paper supply, it is judged as being blocked without paper supply, was detected before the stipulated number is reached In the case of not having paper on the paper tray, it is judged as not having paper on the paper tray, is not described stifled without paper supply Plug, makes the sheet feed section terminate described to retry treatment.

(3) beneficial effect

According to the present invention, by actuator be used for whether be placed with the sensor that paper is detected when, do not use new And special sensor just can reduce cause by the error detection of sensor unnecessary and retry treatment (repeatedly intermittence confession Paper).Furthermore it is possible to eliminate retry being blocked without paper supply for treatment based on unnecessary without in the state of in the paper placed Error detection.

Brief description of the drawings

Fig. 1 is the figure of the structure for representing compounding machine.

Fig. 2 is the figure of the hardware configuration for representing compounding machine.

Fig. 3 is the enlarged drawing of original document feeder and image read-out part.

Fig. 4 is the figure of the hardware configuration for representing original document feeder.

Fig. 5 is to represent a figure for example for placing sensor and the sensor portion of linear transducer.

Fig. 6 is to represent an example for placing sensor and the structure for having used the original copy of actuator to detect of linear transducer The figure of son.

Fig. 7 be represent when original copy is placed with and the original copy placed without when actuator position, action One figure of example.

Fig. 8 represents the exporting change and an example for detecting the presence of original copy for placing sensor and linear transducer.

Fig. 9 is that the length (length of conveying direction) of the original copy for representing placed is less than specific length (original copy of small size) When paper supply control flow a flow chart for example.

Figure 10 is that the length (length of conveying direction) of the original copy for representing placed is more than specific length (large-sized original Original text) when paper supply control flow a flow chart for example.

Specific embodiment

Below, using Fig. 1~Figure 10 to the image processing system comprising the sheet feeding-device 100 involved by implementation method Illustrate.As image processing system, illustrated by taking compounding machine 101 as an example.But, the knot described in each implementation method Each key element such as structure, configuration, the scope of invention is not limited, and is only to illustrate example.

(summary of compounding machine 101)

First, the summary of the compounding machine 100 involved by implementation method is illustrated using Fig. 1.Fig. 1 is to represent compounding machine The figure of 100 structure.

As shown in figure 1, compounding machine 101 possesses original document feeder 1 and image read-out 2 on top.In addition, original copy is defeated Device 1 is sent equivalent to sheet feeding-device of the invention 100.Original document feeder 1 is described in detail in aftermentioned.This Outward, compounding machine 101 has the guidance panel 3 installed in upper right.Guidance panel 3 receives various operations.Guidance panel 3 receives With read original copy operation (based on read original copy view data copying operation or send operation) when on Read the setting of original copy (equivalent to paper).

For example, the size that guidance panel 3 receives the original copy to being placed on original document feeder 1 (original copy pallet 11) is carried out The input of decision.Additionally, guidance panel 3 receives to place setting of the different original copy of size to perform operation on original copy pallet 11 (the hybrid setting of size).Receive other as the placement number or read-out resolution of original copy, or colored reading read with black and white The various settings such as selection.Additionally, display part 31 of the guidance panel 3 comprising display setting screen or the information to user.

Additionally, compounding machine 101 internally has Printing Department 4.Printing Department 4 comprising paper resettlement section 4a, the first delivery section 4b, Image forming part 4c, fixing section 4d, second delivery section 4e etc..Paper resettlement section 4a houses multiple paper, and paper is sent out in printing .The paper sheet delivery that first delivery section 4b will be supplied by paper resettlement section 4a is to image forming part 4c.Image forming part 4c is based on The view data to be printed, forms toner image, and toner image is transferred into paper.Fixing section 4d is to transferred with toner The paper of image is heated and pressurizeed, and makes toner image to paper.Second delivery section 4e will pass through fixing section 4d Paper be discharged to outside machine.

(hardware configuration of compounding machine 101)

Then, based on Fig. 2, the hardware configuration to the compounding machine 101 of implementation method is illustrated.Fig. 2 is to represent compounding machine The figure of 101 hardware configuration.

As shown in Fig. 2 the compounding machine 101 of present embodiment includes master control part 5.The control compounding machine 101 of master control part 5 institute Comprising each several part.Master control part 5 includes CPU51, image processing part 52 and other electronic circuits or element, described image treatment 52 pairs, the portion view data for being used to print or send carries out image procossing.CPU51 is based on control journey of the storage in storage part 53 Sequence or control carry out the control or computing of each several part of compounding machine 101 with data.Storage part 53 be as ROM (read-only storage), FLASH ROM (flash memory), Nonvolatile memory devices as HDD (hard disk drive) with such as RAM (deposit by arbitrary access Reservoir) as volatile storage combination.

Also, it is (paper resettlement section 4a, the first delivery section 4b, image forming part 4c, fixing that master control part 5 gives Printing Department 4 Portion 4d, second delivery section 4e etc.) and original document feeder 1, the action instruction of image read-out 2.Also, master control part 5 is based on View data obtained from reading original copy from the print data of the reception of computer 200 or by image read-out 2, makes printing Portion 4 performs printing (copy function, printer function).

Additionally, master control part 5 is connected with communication unit 54.The action of the control communication unit 54 of master control part 5 and communication process.It is logical Letter portion 54 is the interface for being communicated with the computer 200 as personal computer, server or picture unit 300. Master control part 5 will be based on being sent (sending function) from communication unit 54 by reading the view data of data obtained from original copy.This Outward, the action such as display of the control operation panel 3 of master control part 5.Master control part 5 recognize on guidance panel 3 complete operation and Setting content, identification setting content or printing perform instruction.

(original document feeder 1, image read-out 2)

Then, using Fig. 3, original document feeder 1 and image read-out 2 to implementation method are illustrated.Fig. 3 is former The enlarged drawing of original text conveying device 1 and the part of image read-out 2.

Original document feeder 1 is arranged on the top of image read-out 2.Original document feeder 1 to reading position, (read by image Take the conveying reading contact glass 21 of device 2) the placed original copy D (reference picture 7) of conveying.Original document feeder 1 with Fig. 1, The paper inner side of Fig. 3 is installed on image read-out 2 freely for fulcrum is opened and closed in the vertical direction, also functions to be pressurized from above by The effect of the lid of each contact glass of image read-out 2.

As shown in figure 3, original document feeder 1 includes original copy pallet 11 (equivalent to paper tray) from upstream side, supplies successively Paper portion 12 (comprising pick-up roller 14, separating delivery section 15), delivery section 16 (comprising resistance roller to 16a, multiple conveying roller to 16b, 16c, 16d, discharge roller pair 16e), original copy discharge tray 17.One or more original copys are placed with original copy pallet 11.

The original copy to be read out is placed with original copy pallet 11.The lifting unit of the downstream part of original copy pallet 11 11a is lifted.Lifting unit 11a constitutes a part for original copy pallet 11.If being placed with original copy, lifting unit 11a rise so that The original copy of the top is abutted with pick-up roller 14 among the original copy placed, therefore.On the other hand, risen if no original copy is detected as Drop portion 11a drops to lower position (home position).For the lifting of lifting unit 11a, set in original document feeder 1 and risen Drop motor 11b (reference picture 4).Lift motor 11b among lifting unit 11a, by be arranged on conveying direction upstream side turn Centered on moving axis 11c, rotate lifting unit 11a the mode that conveyance direction downstream side end is lifted or fallen, so that lifting Portion 11a is lifted.

The original copy that the pick-up roller 14 of sheet feed section 12 will be placed on original copy pallet 11 is sent out to original copy transport road 13.Pick-up roller 14 are rotated by the driving of paper supply motor 120 (equivalent to motor, reference picture 4).In addition, in order to control pick-up roller 14 rotation and Stop, the transmission being driven can be set for pick-up roller 14, (the reference picture of paper heating clutch 121 of (connection, releasing) is disconnected 4)。

The separation delivery section 15 of sheet feed section 12 comprising paper supply band 151 and with paper supply with 151 it is relative to position on setting Separate roller 152.The stretching of paper supply band 151 is arranged in driven roller 153 and driven voller 154.Paper supply band 151 is to conveying direction downstream The original copy that side supply, conveying are sent out from pick-up roller 14.Driven roller 153 is rotated by the driving of paper supply motor 120 (reference picture 4) (other motors for rotating driven roller 153 can also be provided for).Rotated by driven roller 153, paper supply band 151 around turn It is dynamic.On the other hand, separate roller 152 is rotated by the driving for separating motor 155 (reference picture 4).Also, separate roller 152 is being produced When overlapping transmission original copy, among the original copy for overlapping, the original copy below separation is sent back to the direction of original copy pallet 11.

As the resistance roller of delivery section 16 to 16a, multiple conveying roller to 16b, 16c, 16d and discharge roller pair 16e along original copy Transport road 13 conveys original copy, and most backward original copy discharge tray 17 is discharged.

Resistance roller is advanced due to bend the original copy for knocking its bite to 16a so as to correct inclination, therefore in original copy Front end reach moment stop.Reached in the amount of bow of the original copy bent by separating the conveying of delivery section 15 a certain amount of When, resistance roller starts rotation to 16a, and downstream original copy is transported in side.Resistance roller is driven to 16a by conveying motor 160.In addition, In order to control to rotate and stop, for resistance roller to 16a, transmission that setting is driven, disconnect the resistance of (connection, release) from Clutch 161 (reference picture 4).

Conveying roller is to 16b, 16c, 16d respectively along conveying direction (from upstream side downstream side) conveying original copy of original copy.Separately Outward, the original copy after discharge roller pair 16e reads to the discharge of original copy discharge tray 17.In addition, conveying roller is to 16b, 16c, 16d and discharge Roller is driven to 16e by conveying motor 160 (reference picture 4).

There is the conveying reading contact glass 21 of image read-out 2 on position in the way of original copy transport road 13. Also, image read-out 2 reads original copy (conveying reading the upper of contact glass 21 with contact glass 21 by conveying reading Side is reading position).

Then, image read-out 2 is illustrated.As shown in Fig. 1 or Fig. 3, image read-out 2 has larnacilla shell Body.Additionally, as shown in figure 3, image read-out 2 includes the first movable frame 23, the second movable frame 24, line 25, volume in housing Drum 26, lens 27 and imageing sensor 28 are taken, described image sensor 28 is used for incident radiation to the light of original copy, reads by every a line Original copy d is taken so as to generate view data.

First movable frame 23 is included to the light source 23L (such as, LED or cold-cathode tube) of original copy irradiation light and the first mirror 231. Second movable frame 24 includes the second mirror 242, the 3rd mirror 243.It is provided with the movable frame 24 of the first movable frame 23 and second many Bar line 25 (in fig. 2, illustrate only one) for convenience.The other end of line 25 is connected to and batches drum 26.Drum 26 is batched to batch Motor (not shown) carries out positive and negative rotation for driving source, makes each movable frame (right and left of image read-out 2 in the horizontal direction To) on move freely.

When the original copy that original document feeder 1 is conveyed is read, the first movable frame 23 and the second movable frame 24 are read to conveying The lower position (reading position) for taking contact glass 21 is mobile.On the other hand, it is placed in mounting reading contact glass in reading During original copy on glass 22, by batching drum 26 or line 25 etc., the first movable frame 23 and the second movable frame 24 are from original position to Fig. 3's Right direction is moved horizontally.Each mirror is by the guides reflected light lens 27 of original copy.Lens 27 carry out optically focused to reflected light, and are incident to figure As sensor 28.Image read-out 2 is based on the output of imageing sensor 28, generates the view data of original copy.

(hardware configuration of original document feeder 1)

Then, using Fig. 3, Fig. 4, the original document feeder 1 as sheet feeding-device 100 to implementation method is said It is bright.Fig. 4 is the figure of the hardware configuration for representing original document feeder 1.

As shown in figure 4, original document feeder 1 includes conveying control unit 10 (equivalent to control unit).Conveying control unit 10 with Master control part 5 is connected.Conveying control unit 10 includes CPU10a, memory 10b (RAM or ROM) and motor control circuit 10c.Horse It is one or more circuits of the rotation, stopping and rotating speed that control each motor in original document feeder 1 up to control circuit 10c (motor driver IC).Conveying control unit 10 is comprising CPU, RAM, ROM, microcomputer, IC, input and output terminal With the substrate of motor control circuit etc..

Original document feeder 1 possesses paper supply motor 120, paper heating clutch 121, separates motor 155, conveying motor 160, resistance The part that the driving source of the grade of power clutch 161 original copy conveying or transmission drive.Particularly as being, for copying operation or transmission operation And reading is when being positioned over the original copy on original copy pallet 11, master control part 5 sends the instruction of original copy conveying to conveying control unit 10.It is defeated Control unit 10 is sent to receive instruction, control paper supply motor 120, paper heating clutch 121, separation motor 155, conveying from master control part 5 The driving (rotation of each motor of control or unlatching/closing or the rotating speed of clutch) of motor 160, resistance clutch 161.By This, conveying control unit 10 controls the supply or conveying of placed original copy.

Original document feeder 1 includes placement sensor 6 and linear transducer 7, is as that can detect on original copy pallet 11 No mounting (placement) has the presence or absence of original copy to detect body.Conveying control unit 10 is based on placing the output of sensor 6, and whether identification original copy It is positioned on original copy pallet 11.In addition, being described in detail to placing sensor 6 in aftermentioned.

Also, original document feeder 1 sets lift motor 11b and upper limit detection sensor 11d (reference picture 3), the liter Drop motor 11b is used to lift lifting unit 11a；The upper limit detection sensor 11d is used to detect that lifting unit 11a rises to the upper limit Position.If detect be placed with original copy (if identify place sensor 6 output valve be in as be placed with original copy process it is defeated Go out value interval), then conveying control unit 10 rotates lift motor 11b so that among the original copy placed the original copy of the top with Pick-up roller 14 is abutted.

Herein, pick-up roller 14 by support member it is (not shown) support so that its relative to driven voller 154 rotary shaft (not Diagram) shake.Therefore, pick-up roller 14 moves up and down.Also, upper limit detection sensor 11d is infiltration type optical sensor.By rising The rising of drop portion 11a, original copy is picked roller 14 and lifts.Conveying control unit 10 confirms the output of upper limit detection sensor 11d, when setting During the light path of the optical sensor that the projection for putting upward direction protrusion on the supporting member blocks upper limit detection sensor 11d, inspection Survey lifting unit 11a and be raised to upper limit position, stop lift motor 11b.

On the other hand, if conveying detect placed original copy without (if recognize place sensor 6 output valve from Become as interval without the output valve for placing original copy treatment as the output valve interval for being placed with original copy treatment), then conveying control Portion processed 10 makes lift motor 11b invert certain hour, so that lifting unit 11a drops to lower position.

Additionally, original document feeder 1 is used as detection body is whether there is, comprising for detecting the original copy being positioned on original copy pallet 11 Whether it is more than specific length linear transducer 7.Particularly as being, conveying control unit 10 is reading the size of different-sized original When hybrid, based on the output valve of linear transducer 7, with the presence or absence of more than specific length in the placed original copy of detection.Additionally, When the original size for completing to read original copy by guidance panel 3 is the setting of more than specific length, the base of control unit 10 is conveyed In the output valve of linear transducer 7, confirm be strictly whether to be placed with more than specific length original copy.

Particularly as being, it is considered to the original of the situation of the paper of hybrid A4 sizes and A3 sizes or hybrid B5 sizes and B4 sizes The situation of original text, from the conveyance direction downstream side end of original copy pallet 11 (lifting unit 11a), linear transducer 7 is arranged on A4 sizes Short side (about 210mm) above B4 sizes the following scope in side long (about 364mm) in.Dress is conveyed in the original copy of present embodiment Put in 1, linear transducer 7 is arranged on from the conveyance direction downstream side end of original copy pallet 11 (lifting unit 11a), the position of 330mm On.

On the other hand, the conveying direction downstream of original copy pallet 11 is arranged on as the placement sensor 6 for whetheing there is detection body Portion.In other words, placing the provided position of sensor 6 is, even if being placed with the smallest sheet that can be placed can also detect paper Placement position.Particularly as being, place sensor 6 and be arranged in following region：Original copy pallet 11 (lifting unit 11a) it In, from conveying direction downstream, to conveying direction on the minimum original copy (being decided to be the paper of minimum in specification) that can place Conveying direction length region.In addition, in the original document feeder 1 of present embodiment, being provided with and being limited in original copy Limitation guide member 11f (reference picture 3) on the direction vertical relative to conveying direction.Limitation guide member 11f is slided, right Original copy is positioned (to its center), in making on the vertical direction of the conveying direction of original copy on relative to original copy pallet 11 Heart position is consistent with the center of the width of original copy.Therefore, sensor 6 is placed, by limiting guide member 11f to minimum When original copy is positioned, it is arranged in the range of Chong Die with minimum original copy.

The result is that place sensor 6 being arranged on than linear transducer 7 more by conveyance direction downstream side, linear transducer 7 Conveying direction upstream side is more leaned on positioned at than placing sensor 6.

Additionally, in order to along original copy transport path, detect the feed status of original copy, so as to set multiple along original copy transport path Sensor.Each sensor is, for example, the optical sensor of infiltration type or reflection-type.Each sensor exist in detection range paper and During in the absence of paper, output valve is different.

In the compounding machine 101 (original document feeder 1) of present embodiment, (supplied near the downstream for separating delivery section 15 Paper sensor 8), resistance roller to the upstream side of 16a nearby (resistive force sensor S1), close to the upstream side of reading position, (timing is passed Sensor S2) and discharge roller pair 16e parts (discharge sensor S3) setting sensor.

Feed in sensor 8 is acted by the paper supply of sheet feed section 12, for detecting from whether original copy pallet 11 has sent out original The sensor of original text.Conveying control unit 10 is by confirming (to be rotated pick-up roller 14) in pre-determined permission since paper supply In time period, whether the output valve of feed in sensor 8 is turned to as depositing from as interval change of the output valve processed in the absence of original copy Make the output valve for the treatment of in original copy to confirm whether the front end of original copy (paper) reaches the set location of feed in sensor 8.Example Such as, it is allowed to which the time period is sensed in the front position (for example, downstream of original copy pallet 11) from the original copy placed to paper supply During the distance of device 8 is divided by the time obtained by the transporting velocity in specification, include the surplus that can allow for carrying out and postpone Time period.Represent that the permission time segment data D1 of permission time period is stored in memory 10b.

The paper supply motor 120 of present embodiment uses stepper motor.Therefore, conveying control unit 10 is supplied to paper supply motor 120 To clock signal.Herein, it refers to that will detect original copy to feed in sensor 8 since rotation for example to allow time segment data D1 The minimum clock of allowed band of front end count to maximum clock number and be stored as permission time segment data D1.

Conveying control unit 10 is being allowed in the time period, by paper supply with reference to time segment data D1 is allowed since paper supply When the front end that sensor 8 can not detect original copy reaches, the supply for being identified as original copy is not completed well.In the supply of original copy When not completing, conveying control unit 10 makes sheet feed section 12 (pick-up roller 14, separation delivery section 15) carry out retrying treatment.Retrying treatment is Referring to allow sheet feed section 12 to repeat intermittent paper supply with stipulated number in conveying, until feed in sensor 8 can detect original copy (paper) Treatment, the intermittent paper supply refer to temporarily cease pick-up roller 14 or separate delivery section 15 rotation after, it is rotated again, Paper supply action is carried out again.Big torque during using motor low speed, by repeating stopping, the rotation of paper supply motor 120, promotes The submitting of the original copy of the top.

Herein, the summary for retrying treatment is illustrated using Fig. 4.In the original document feeder 1 of present embodiment, weight The stipulated number (number of retries) that intermittent paper supply in examination treatment is repeatedly predetermined, until the supply of original copy is completed.Rule Determine number of times, for example, repeatedly, can suitably determine.In the original document feeder 1 (sheet feeding-device 100) of present embodiment In, it is stipulated that number of times is 5 times.The data of the upper limit number of times that expression is retried are stored in the memory 10b in original document feeder 1 It is stipulated number data D2.It is input into by the setting to guidance panel 3, stipulated number data D2 can be updated, user also may be used Freely to set stipulated number.

During intermittent paper supply is repeated with stipulated number, when can confirm that original copy by feed in sensor 8 During supply, conveying control unit 10 continues next the supply and conveying of original copy.On the other hand, even if between being repeated with stipulated number Having a rest property paper supply, but when can't confirm the supply of original copy by feed in sensor 8, conveying control unit 10 is judged as generating nothing Paper supply is blocked.If be judged as generating being blocked without paper supply, conveying control unit 10 stops sheet feed section 12 (paper supply motor 120, separation Motor 155), the paper supply of delivery section 16 (conveying motor 160) and conveying action.Additionally, conveying control unit 10 is to guidance panel 3 Display part 31 is notified there occurs and blocked without paper supply.

Additionally, conveying control unit 10 by confirm feed in sensor 8 output valve whether from as exist original copy process Output value changes are whether the rear end that original copy (paper) is confirmed as the output valve processed in the absence of original copy has passed through paper supply biography The set location of sensor 8.

Resistive force sensor S1 is for detecting whether original copy reaches sensor of the resistance roller to 16a.Conveying control unit 10 is true Recognize the output valve of resistive force sensor S1, and resistance roller is passed through to detect to the original copy arrival of 16a or original copy.

Timing sensor S2 is for detecting whether paper reaches the sensor in front of conveying reading contact glass 21.It is defeated Send control unit 10 to confirm the output valve of timing sensor S2, and confirm whether the front end of original copy reaches setting for timing sensor S2 Seated position.Additionally, conveying control unit 10 by timing sensor S2 when the arrival of original copy front end is detected, to control image reading The reading control unit of device 2 is notified.Read control unit to be based on notifying, calculate the reading start time of one page original copy, with can be from The front end of original copy is read out.

Discharge sensor S3 be for detect original copy whether to original copy discharge tray 17 discharge sensor.Conveying control unit 10 output valves for confirming discharge sensor S3, and it is logical to the front end arrival of the original copy to discharge sensor S3 set locations or rear end Cross and detected.Conveying control unit 10 is from as the output value changes that there is original copy treatment in the output valve of discharge sensor S3 During as the output valve processed in the absence of original copy, it is identified as discharging paper to original copy discharge tray 17.

Conveying control unit 10 is based on the output of feed in sensor 8, and whether the paper supply to original copy completes to be identified.Additionally, Conveying control unit 10 is based on the output of each sensor S1~S3, to being reached and by knowing to the original copy of sensor set-point Not.Additionally, also fail to detect original copy arrival more than the specified time of arrival pre-determined to each sensor, and more than predetermined Also fail to detect original copy by the time and pass through, thus convey control unit 10 and be identified as original copy paperboard (blocking).

(placing sensor 6 and linear transducer 7)

Then, using Fig. 5~Fig. 8, an example of placement sensor 6 and linear transducer 7 to implementation method is carried out Explanation.Fig. 5 is a figure for example for representing the sensor portion 93 for placing sensor 6 and linear transducer 7.Fig. 6 is to represent to put Put a figure for example of sensor 6 and the structure for having used the original copy of actuator 9 to detect of linear transducer 7.Fig. 7 is to represent The position of the actuator 9 when when being placed with original copy and without original copy, a figure for example of action.Fig. 8 represents that placement is passed The exporting change of sensor 6 and linear transducer 7, with an example for detecting the presence of original copy.

Original document feeder 1 as can detect whether loaded on original copy pallet 11 (placement) have the presence or absence of original copy detect Body, comprising placement sensor 6 and linear transducer 7.Also, the placement sensor 6 and linear transducer 7 of present embodiment can be with Use identical sensor.Therefore, in the following description, sensed using identical to placing sensor 6 and linear transducer 7 The situation of device is illustrated, and each sensor marks identical reference to illustrate in identical part.

Place sensor 6 and linear transducer 7 possess include illuminating part 91 (for example, LED) and photographic department 92 (for example, Phototransistor) sensor portion 93.The illuminating part 91 of sensor portion 93 is to the irradiation light of photographic department 92.The detection faces of photographic department 92 Towards illuminating part 91.The output of photographic department 92 changes according to the size of the light for receiving.

Also, as shown in Fig. 5~Fig. 7, place sensor 6 and linear transducer 7 includes actuator 9.Actuator 9 relative to Fulcrum 94 is moved up and down.Fig. 6 represents the situation that sensor 6 and linear transducer 7 are placed from the downstream direction observation of conveying direction An example.Fig. 7 is represented from the situation of the direction observation placement sensor 6 and linear transducer 7 vertical with conveying direction One example.

As shown in Figure 6, Figure 7, in the state of no original copy, the original copy of the protuberance 9a of actuator 9 from original copy pallet 11 Mounting surface 11e is protruded.Also, if original copy is placed with, original copy is contacted with the protuberance 9a of actuator 9, and actuator 9 is pressed. (rotation) is moved because original copy is placed, the actuator 9 that position declines hinders the light path of illuminating part 91 and photographic department 92.Its result It is that the output valve of photographic department 92 uprises (High) or step-down (Low).

If the original copy placed is without actuator 9 is boosted upward by reinforcing part 95 (for example, spring).Also, Actuator 9 returns to the protuberance 9a position i.e. bases that (original copy mounting surface 11e) is protruded from above original copy pallet 11 of actuator 9 Level is put.Due to original copy without and move (rotation), so as to the actuator 9 that is boosted does not hinder illuminating part 91 and photographic department 92 Light path.The result is that the output valve of photographic department 92 uprises (High) when there is original copy if low (Low), if high when there is original copy (High) then step-down (Low).In addition, actuator 9 in present embodiment is the type for rotating, but can also be relative to The actuator 9 that the vertical direction of paper mounting surface moves up and down.

So, conveying control unit 10 places the (photographic department of sensor portion 93 of sensor 6 or linear transducer 7 by confirmation 92) output valve size, can interpolate that on original copy pallet 11 either with or without the original copy placed.In other words, sensor 6 and length are placed Any one in sensor 7 is spent, comprising the actuator 9 acted at a touch with the paper placed, according to the position of actuator 9 Output is different.

Particularly as being, as shown in figure 8, setting the output relative to photographic department 92 to placement sensor 6 and linear transducer 7 The threshold value of value.In the example of fig. 8, the threshold value relative to the photographic department 92 for placing sensor 6 is illustrated with threshold value Vth1, with threshold Value Vth2 illustrates the threshold value of the photographic department 92 relative to linear transducer 7.Conveying control unit 10 is by comparing placement sensor 6 Analog output value and threshold value Vth1, judge whether the original copy being also placed on original copy pallet 11.For example, being hidden in light path one During the photographic department 92 that gear output valve just diminishes, conveying control unit 10 is in small in the output valve for placing the photographic department 92 of sensor 6 When the scope of threshold value Vth1, it is judged as being placed with original copy on original copy pallet 11, in the output of the photographic department 92 for placing sensor 6 Value is judged as that the original copy placed on original copy pallet 11 does not have in the scope of more than threshold value Vth1.

Additionally, conveying control unit 10 is compared by the output valve of comparison length sensor 7 with threshold value Vth2, judge what is placed Whether original copy is the size for exceeding specific length.For example, light path once the output valve step-down (Low) that is blocked photographic department 92 When, conveying control unit 10 is judged as when the output valve of the photographic department 92 of linear transducer 7 is in the scope less than threshold value Vth2 Be placed with the original copy of the size more than specific length, place sensor 6 photographic department 92 output valve be in threshold value Vth2 with On scope when, be judged as not placing the original copy of the size more than specific length.

(placing the error detection of sensor 6)

Then, using Fig. 7, to being illustrated using the error detection in original copy that detects the presence of for placing sensor 6.

In the original document feeder 1 (sheet feeding-device 100) of present embodiment, conveying control unit 10 confirms to place biography Whether the output valve of sensor 6, the original copy to being placed on original copy pallet 11 whether there is and detects.

In the state of the operation of original copy reading is not carried out, conveying control unit 10 confirms to place sensor in some cycles 6 output valve, compares output valve and threshold value Vth1.Thus, conveying control unit 10 recognizes whether new original copy is placed on original copy On pallet 11.

If also, indicating execution original copy to read work guidance panel 3 in the state of being placed with original copy on original copy pallet 11 Industry, then convey control unit 10 and start to convey original copy.Conveying control unit 10 is based on the output of feed in sensor 8 from as no original copy The output valve for the treatment of is interval to become the output valve interval turned to as there is original copy to process, and recognizes the set location to feed in sensor 8 The arrival of the original copy front end of supply.And then, conveying control unit 10 be based on feed in sensor 8 output from as have original copy process Output valve is interval to as the interval change of the output valve processed without original copy, recognizes that the rear end of supplied original copy has passed through to supply The set location of paper sensor 8.

Control unit 10 is conveyed in the original document feeder 1 of present embodiment, in Job execution to confirm to place sensor 6 Output, confirms whether the original copy being placed on original copy pallet 11 at the pre-determined confirmation moment also has and remains.Specifically, in advance The confirmation moment of decision refers to the output based on feed in sensor 8, and conveying control unit 10 recognizes the original copy in feed in sensor 8 The moment that rear end passes through.

Particularly as being, conveying control unit 10 is placed the output valve of sensor 6 and is comprised in as without original confirming the moment When the output valve of original text treatment is interval, to identify and complete the supply (original copy placed in all original copys of upper that one page for once supplying Not), all original copys conveying and in reading operation has been completed.In this case, conveying control unit 10 do not make sheet feed section 12, Paper supply motor 120 starts the next supply of original copy.

On the other hand, conveying control unit 10 is comprised in as there is original in the output valve of the placement sensor 6 for confirming the moment When the output valve of original text treatment is interval, that one page identified in upper once paper supply is placed on all original copys on original copy pallet 11 not Complete supply, the original copy also placed.When original copy is remained, conveying control unit 10 opens sheet feed section 12, paper supply motor 120 Begin the next paper supply of original copy.

Herein as described above, the placement sensor 6 of the application includes actuator 9.Sensor 6 is placed according to actuator 9 Rotational angle (position) changes output.Also, actuator 9, if the original copy placed does not have, from the original copy quilt by being placed The state (position during placement) pressed, is back to the position (reference position) during without the original copy placed.Do not have in original copy When, in order that actuator 9 is quickly returned to reference position, it is provided with reinforcing part 95.

But, there is returning for the reference position to actuator 9 in force decline of reinforcing part 95 caused by all the year round etc. Return slack-off situation.If the return to the reference position of actuator 9 is slow, exist at the confirmation moment for whetheing there is original copy, actuator 9 It is not back to the situation of reference position.Accordingly, there exist original copy without, but place sensor 6 output valve do not change to work It is the situation in the output valve interval that original copy is not processed.In this case, actually it is not placed with original in original copy pallet 11 Original text, but the conveying error detection of control unit 10 (misrecognition) is also to remain original copy on original copy pallet 11.Past, actually due to not having There is the original copy of placement, therefore after the intermittent paper supply in retrying treatment, be erroneously detected as there occurs without paper supply blocking.

Therefore, in the original document feeder 1 (sheet feeding-device 100) of present embodiment, improve final original copy and supplied Retrying after giving, what execution prevented based on the error detection whetheing there is paper (original copy) unnecessary retries treatment (between redundance Having a rest property paper supply) and without paper supply block error detection paper supply control.

(paper supply control)

Then, using Fig. 9~Figure 11, to one of the flow of the paper supply control in the original document feeder 1 of implementation method Example is illustrated.Fig. 9 is to represent that the length (length of conveying direction) in the original copy placed is less than specific length (small size Original copy) when paper supply control flow a flow chart for example.Figure 10 is to represent (defeated in the length of the original copy placed Send the length in direction) for more than specific length (large-sized original copy) when paper supply control flow a flow for example Figure.

(1. situation of the original size less than specific length)

First, the length for being placed with conveying direction (can not be detected less than the original copy of specific length by linear transducer 7 The original copy of the size whetheing there is) in the case of original copy paper supply control illustrate.

As described above, conveying control unit 10 by confirming the output of linear transducer 7, placed original copy can be detected Whether size is less than specific length.Particularly as being, conveying control unit 10 is based on placing sensor 6 and exports to detect depositing for original copy The output valve if based on linear transducer 7 is not detected by the presence of original copy, then be judged as that the size of placed original copy is small In specific length.On the other hand, conveying control unit 10 detects the presence of original copy based on the output for placing sensor 6, if base The presence of original copy is detected in the output of linear transducer 7, is then judged as the size of placed original copy for more than specific length.

Additionally, guidance panel 3 receives the size setting of the original copy placed.Therefore, conveying control unit 10 can also be based on by The size of the original copy of user's setting, recognizes whether placed original copy is more than specific length.

Also, starting for Fig. 9 refers to that, in order to read the original copy less than specific length, conveying control unit 10 makes paper supply motor 120 rotations, make sheet feed section 12 (pick-up roller 14, separation delivery section 15) start the moment of paper supply.At the moment, control unit 10 is conveyed The output valve that sensor 6 is placed in identification is in as the output valve interval for being placed with original copy treatment, and original is placed with so as to detect Original text.

First, conveying control unit 10 makes paper supply motor 120 start rotation, so as to start paper supply (step #1).Also, conveying Control unit 10 starts within permission time periods for being determined of time segment data D1 (between the clock number of regulation) since the supply of original copy, Being identified through feed in sensor 8 can detect front end arrival (step #2) of original copy.

It is defeated when that can detect that front end reaches (when original copy is sent from original copy pallet 11 well, the "Yes" of step #2) Sending control unit 10 makes delivery section 16 continue to convey original copy, based on the output of feed in sensor 8, detects that the rear end of original copy has passed through to supply Paper sensor 8 (step #3).

Also, conveying control unit 10 is based on placing the output of sensor 6, whether also have on confirmation original copy pallet 11 (whether Remain) original copy (step #4).If not remaining ("No" of step #4), make sheet feed section 12 (paper supply motor 120, separation Motor 155) paper supply action stop (step #5).In addition, conveying control unit 10 is based on the output of discharge sensor S3, if detection To the discharge of the last original copy placed, then stop the conveying action of delivery section 16 (conveying motor 160).And then this flow Terminate (end).

On the other hand, it is defeated when conveying control unit 10 also has original copy on original copy pallet 11 is detected ("Yes" of step #4) Control unit 10 is sent to start the next supply (step #6) of original copy.In addition, conveying control unit 10 is detected by feed in sensor 8 After being reached to original copy, when the original copy in conveying departs from from the downstream of original copy pallet 11, stop pick-up roller 14, set one Fixed paper interval.And then, untill the moment for passing through feed in sensor 8 at least up to the rear end of preceding original copy, conveying control Portion 10 makes sheet feed section 12 (pick-up roller 14) in halted state.If also, reach regulation paper interval, convey control unit 10 Pick-up roller 14 or sheet feed section 12 are rotated, starts the next supply (step #6) of original copy.And then flow return to step #1.

Since paper supply when the front end for allowing to fail to detect original copy in feed in sensor 8 in the time period reaches (step # 2 "No"), conveying control unit 10, by controlling paper heating clutch 121 etc., makes to judge to retry treatment or being blocked without paper supply Paper supply action (spinning movement) of sheet feed section 12 (pick-up roller 14) is temporarily ceased (step #7).Also, conveying control unit 10 is being opened Before the intermittence that begins paper supply (before starting to retry treatment), confirm to place the output valve (step #8) of sensor 6.Also, conveying control Portion processed 10 confirms whether the output valve for placing sensor 6 is in as the output valve interval processed without original copy (when not having paper Output valve scope) (step #9).

Confirming to place the output of sensor 6, and (only one or final original copy during output valve when being without original copy After being supplied to, actuator 9 returns to the situation of position during without paper, the "No" of step #9), conveying control unit 10 is judged as No paper on paper tray (original copy pallet 11), is blocked without paper supply, makes sheet feed section 12 not carry out (not making paper supply motor 120 restart) retry treatment (paper supply action) do not detect without paper supply block (step #10).Also, due to need not further supply Paper, therefore this flow terminates (end).In addition, in the output based on placement sensor 6 at first original copy since operation Value, is able to confirm that when not having original copy on before processing original copy pallet 11 is retried, and conveying control unit 10 can also be in guidance panel 3 Display part 31 on pointed out to place the notice of original copy again.

On the other hand, confirming to place the output of sensor 6, and detect on original copy pallet 11 also residual (presence) and have original During original text ("Yes" of step #9), conveying control unit 10 is confirmed whether repeated regulation at that one page original copy that will be supplied The intermittent paper supply (step #11) of number of times.

In the intermittent paper supply of repeated stipulated number ("Yes" of step #11), conveying control unit 10 is carried out without confession Paper blocks the treatment (step #12) when occurring.Conveying control unit 10 is carried out as treatment when occurring without paper supply blocking, i.e. paper supply The paper supply action in portion 12 stops or the original copy conveying action of delivery section 16 stops or for the display part 31 to guidance panel 3 Notify the treatment blocked without paper supply.

On the other hand, when the intermittent paper supply of stipulated number is not repeated also ("No" of step #11), control unit 10 is conveyed Sheet feed section 12 (pick-up roller 14 or paper supply motor 120 separate delivery section 15) is rotated again, carry out intermittent paper supply and (retry place Reason) (step #13).Also, conveying control unit 10 adds " 1 " (step #14) count value of the number of times for retrying of executed so far. Also, flow return to step #2.

After flow return to step #2, when feed in sensor 8 fails the arrival for detecting original copy, carry out next time intermittent Before paper supply, confirm to place the output valve (step #8, step #9) of sensor 6.Therefore, opened in each (each) intermittence paper supply Before beginning, the output valve for conveying 10 pairs of placement sensors 6 of control unit confirms.

(being 2. only placed with the situation of original copy more than specific length)

Then, using Figure 10, to being only placed with the length of conveying direction for original copy more than specific length (is passed by length Sensor 7 can detect the presence of the original copy of the size of original copy) situation original copy paper supply control illustrate.

As described above, conveying control unit 10 by confirming the output of linear transducer 7, placed original copy can be detected Whether size is less than specific length.Also, position and the length of the limitation guide member 11f slided based on correspondence antiquarian The combination of the output of sensor 7, the size of conveying paper of the control unit to being placed carries out specific.For example, A4 and A3 sizes, limit The position of guide member 11f processed is identical, and the output of linear transducer 7 is different, in addition, being set on limitation guide member 11f There is the guide member position-detection sensor (not shown) for the position of detection limits guide member 11f.For example, guide member Position-detection sensor is the sensor comprising the variable resistor changed according to sliding position resistance value.Conveying control unit 10 Receive the output of guide member position-detection sensor, recognize the size on main scanning direction of paper.Additionally, guidance panel The size setting of 3 original copys for receiving placement.Therefore, conveying control unit 10 can also be based on the chi of the original copy set by user Very little, whether the original copy to being placed only is more than specific length to be identified.

In the length of simply conveying direction reads for original copy more than specific length, conveying control unit 10 is grown by confirming The output valve of sensor 7 is spent, and is more than placing sensor 6, it is also possible to carried out to whether remaining original copy on original copy pallet 11 Confirm.Therefore, below, using Figure 10, the output valve of linear transducer 7 is confirmed to conveying control unit 10, and original size is One example of the flow of the paper supply control in the case of more than specific length is illustrated.

First, Figure 10 to start refer to that, in order to read original copy more than specific length, conveying control unit 10 makes paper supply motor 120 rotations, make sheet feed section 12 (pick-up roller 14, paper supply is with 151) start the moment of paper supply.

Here, though read specific length more than original copy in the case of, as shown in Figure 10, step #1~step #7 with Treatment illustrated in fig. 9 is identical, can quote explanation.Therefore, the explanation of #1~step #7 the step of to Figure 10 is omitted.

Also, allowing to fail to detect original copy front end to reach by feed in sensor 8 in the time period (to walk since the paper supply The "No" of rapid #2), and when temporarily ceasing sheet feed section 12 (pick-up roller 14) (step #7), conveying control unit 10 is starting intermittence Before paper supply (before starting to retry treatment), only to linear transducer 7 or to placing both sensor 6 and linear transducer 7 Output valve confirmed (step #8a).

Read specific length more than original copy in the case of, actually used for confirming to be on original copy pallet 11 The no sensor for remaining original copy can be linear transducer 7.In addition it is also possible to using linear transducer 7 and place sensing Both devices 6.

If only use linear transducer 7, whether output of the conveying control unit 10 to linear transducer 7 puts in conduct Output valve interval (scope of output valve during without original copy) for being equipped with original copy more than specific length treatment is confirmed (step Rapid #9a).In other words, in the case where original copy more than specific length is read, conveying control unit 10 can also be based only upon length biography Whether the output valve of sensor 7, rather than sensor 6 is placed, confirms to remaining original copy on original copy pallet 11.Thus, i.e., Make the return of position when not being placed to paper of the actuator 9 of placement sensor 6 very poor, it is also possible to detect original copy exactly Original copy is not remained on pallet 11.

Additionally, when using both sensor 6 and linear transducer 7 is placed, whether conveying control unit 10 pairs meets following The condition of any one in situation is confirmed (step #9a)：The output for placing sensor 6 is in as without placement original copy Output valve interval (scope of output valve during without original copy) for the treatment of, and the output of linear transducer 7 does not have in conduct Place output valve interval (scope of output valve during without original copy) of original copy treatment more than specific length.It is any not meeting During the condition of one, then original copy is not placed or is not placed properly.No matter which kind of situation, be not the shape that can send out original copy State, retry treatment or be all unnecessary without paper supply jam detection.Therefore, among these conditions are met any one when (step # The "No" of 9a), conveying control unit 10 is judged as no paper on paper tray (original copy pallet 11), is blocked without paper supply, from Without carrying out further intermittence paper supply (retrying treatment), the generation (step #10) blocked without paper supply is not detected yet.

Even in addition, read specific length more than original copy in the case of, as shown in Figure 10, step #10~step # 14 is identical with treatment illustrated in fig. 9, can quote explanation.Therefore, the step of omission is to Figure 10 #10~step #14's is detailed Explanation.

Even if in addition, read specific length more than original copy in the case of, it is identical with treatment illustrated in fig. 9, convey Control unit 10 only confirms the output valve for placing sensor 6 without confirming linear transducer 7 before each intermittence paper supply starts Output, when conveying control unit 10 is retried every time, whether the output valve to placing sensor 6 becomes as the defeated of no original copy treatment Go out value interval (scope of output valve during without paper) to be confirmed, be judged as not having on paper tray (original copy pallet 11) Paper, is not when being blocked without paper supply, it is also possible to make the intermittent paper supply (retrying treatment) of sheet feed section 12 or paper supply release.

(the 3. hybrid situation of size)

Then, the paper supply control to size in the case of hybrid is illustrated.

In original document feeder 1, image read-out 2 in the application, various sizes of original copy beam can will be mixed with Being positioned over original copy pallet 11 carries out the reading of original copy.Guidance panel 3 receives to be read out the setting of original copy in the case where size is hybrid.Example Such as, the original copy beam combined by the original copy of A4 sizes and A3 sizes can be positioned over original copy pallet 11, is read out.

Be set to carry out size it is hybrid under reading original copy reading in, conveying control unit 10 is by original copy one One ground is delivered to reading position (transporting reading contact glass).Also, for example, image read-out 2 reads chi with maximum Very little reading original copy.The process circuit or image processing part 52 being arranged in image read-out 2, the picture number obtained to reading According to, the size that image procossing determines each view data is carried out, the size to determining deletes unnecessary pixel (image-region), generation The view data of the size of decision.

Herein, in the case where size is hybrid, the size of the original copy placed is various.Therefore, even if linear transducer 7 Output valve become as the interval value of the output valve that is processed without original copy, the original copy less than specific length may also remain in original On original text pallet 11.Therefore, in the case where size is hybrid, existing can not accurately detect original copy pallet 11 by linear transducer 7 On whether remain the situation of original copy.

Therefore, as shown in figure 9, in the hybrid reading of size, before intermittent paper supply (retrying treatment) starts, conveying is controlled Whether portion processed 10 does not use linear transducer 7 and using only sensor 6 is placed, is carried out really to remaining original copy on original copy pallet 11 Recognize.

So, the sheet feeding-device 100 (original document feeder 1) of implementation method includes paper tray (original copy pallet 11) sensor 6, sheet feed section 12, delivery section 16, feed in sensor 8 and control unit (conveying control unit 10), the paper, are placed Pallet places one or more paper；, comprising the actuator 9 that paper is just acted is placed with, it is according to cause for the placement sensor 6 Move the position of device 9 and export difference, be arranged on the position that detection paper is placed；The sheet feed section 12 makes paper supply rotary body (pick up Take roller 14) rotation, carry out the supply of paper being placed on the paper tray；The delivery section 16 is conveyed by the sheet feed section The paper of 12 supplies；The feed in sensor 8 is used to be sent out from paper tray according to the paper supply motion detection paper of sheet feed section 12； The control unit is based on whetheing there is paper on paper tray described in the size detection of the output valve of the placement sensor 6, based on institute Whether the output for stating feed in sensor 8 is supplied to according to paper supply motion detection paper, if after feed in sensor 8 detects paper The output valve of sensor 6 is placed at end by then confirmation, and the paper supply that sheet feed section 12 is made when being judged as having paper carries out lower one page is moved Make.Control unit the output based on feed in sensor 8 detect there is no paper supply when, carry out retrying treatment, though sheet feed section 12 with Stipulated number repeats intermittent paper supply, and until feed in sensor 8 is able to detect that paper, the intermittent paper supply refers to stop Paper supply action is carried out again after paper supply action, confirms to place the output of sensor 6 before each intermittent paper supply starts, entering The intermittent paper supply of stipulated number of having gone but still fails to be judged as in the case of detecting paper supply to be blocked without paper supply, specifies reaching Detected before number of times in the case of there is no paper on paper tray, it (is further paper supply to make sheet feed section 12 terminate to retry treatment Treatment is in itself), it is judged as not having paper on paper tray, it is not to be blocked without paper supply.

Past, to the paper of paper tray (original copy pallet 11) whether without and whether continue the judgement of paper supply, it is special Timing carve only carry out once, the error detection under particular moment and retry treatment in unnecessary intermittent paper supply repetition or nothing The error detection that paper supply is blocked has directly contact.But, in the present invention, even if position (benchmark when actuator 9 is to without paper Position) return it is slow, during intermittent paper supply is repeated, as long as the position of actuator 9 returns to reference position and then terminates to retry place Reason, no longer detects and is blocked without paper supply.In other words, the upper moment that the paper supply in each intermittent paper supply starts, it was to paper It is no without being confirmed, increase the number of times confirmed to whether being placed with paper on paper tray.

Therefore, because the delay of the action of actuator 9, to whether carry out that the supply of next paper confirmed when Carve, even if there is the error detection that paper is remained on paper tray (original copy pallet 11), it is also possible to by retry treatment in (interval Property paper supply repetition in) confirm again, correct error detection.The result is that can reduce that unnecessary intermittent paper supply or nothing is continued The error detection that paper supply is blocked.Furthermore, it is possible to be not provided with new, special sensor, prevent from unnecessary retrying and process or nothing The error detection that paper supply is blocked, so as to suppress the manufacturing cost of sheet feeding-device 100 (original document feeder 1).

Additionally, the sheet feeding-device 100 (original document feeder 1) of implementation method comprising configuration than place sensor 6 The linear transducer 7 of upstream side.The output of control unit (conveying control unit 10) based on linear transducer 7, detection is placed Paper whether be more than specific length, control unit in the paper being only placed with more than specific length, in each intermittence Before paper supply starts, confirm the output valve of linear transducer rather than placing sensor, be detected as not placing specific length with On paper when, it is also possible to make sheet feed section 12 terminate retry treatment (repetition of intermittent paper supply).As a result, control unit is in sight Make to there are the error detection without paper, be also judged as there is no paper on paper tray, be not that paper supply is blocked, do not detect stifled without paper supply The generation of plug.

Thus, in the paper only large scale placed, using only linear transducer 7, to paper tray (original copy pallet 11) whether no paper is confirmed on, it is possible to reduce the unnecessary error detection for retrying treatment or the blocking without paper supply. Additionally, with common compared with the placement sensor 6 of the certain action of paper actuator 9 is placed, the actuator of linear transducer 7 9 damage, fatigue are less, therefore compared with the situation for placing sensor 6 is only used, exist can be to whetheing there is paper on paper tray The situation that Zhang Jinhang confirms again exactly.

Additionally, the sheet feeding-device 100 (original document feeder 1) of implementation method comprising configuration than place sensor 6 The linear transducer 7 of upstream side.The output of control unit (conveying control unit 10) based on linear transducer 7, to what is placed Whether paper is more than specific length to be detected.Additionally, control unit is in the paper being placed with more than specific length, each Intermittent paper supply start before, confirm to place the output valve of sensor 6 and linear transducer 7, it is any in following condition is met At one, it is also possible to make sheet feed section 12 terminate to retry treatment, i.e.,：Paper tray is detected as based on the output valve for placing sensor 6 No paper on (original copy pallet 11), and the output valve based on linear transducer 7 be detected as not being placed with specific length with On paper.Even if as a result, control unit there are the error detection without paper, being also judged as there is no paper on paper tray , it is not to be blocked without paper supply, the generation blocked without paper supply is not detected.

Thus, in the case where large-sized paper is placed with, based on any in placement sensor 6 and linear transducer 7 The output valve of one, can make to retry treatment (intermittent paper supply) and stop that can be detected as the stage without the paper placed Only, the error detection blocked without paper supply is no longer carried out.Therefore, using multiple sensors, can be to there is no paper to enter on paper tray Row is accurate to be confirmed.

The output of (conveying control unit 10) based on linear transducer 7 additionally, control unit, to the paper placed whether be Paper (original copy) less than specific length is detected.When the paper less than specific length is only placed with, control unit (conveying control Portion 10 processed) before beginning before the beginning of each each intermittent paper supply, confirm the output valve for placing sensor 6 rather than length Sensor 7, is judged as making paper supply if no paper on paper tray (original copy pallet 11) if based on the output valve for placing sensor 6 Terminate to retry treatment in portion 12.Even if as a result, control unit there are the error detection without paper, being also judged as on paper tray There is no paper, blocked without paper supply, the generation blocked without paper supply is not detected.It is being placed with the actuator 9 with linear transducer 7 In the case of the paper of discontiguous size, linear transducer 7 is used, it is impossible to detected to whetheing there is paper on paper tray. So, by the size according to the paper placed, determine whether the biography not confirmed again for the paper to being placed Sensor, therefore can exactly be confirmed to whetheing there is paper on paper tray.

Additionally, operating portion (guidance panel 3) receives that the different paper of size is hybrid at paper tray (original copy pallet 11) On the hybrid setting of size.Also, when operating portion receives the setting being read out under size is hybrid, control unit (conveying control Portion 10 processed) before each intermittent paper supply starts, the output valve for placing sensor 6 is confirmed rather than linear transducer 7, in base In the case that the output valve for placing sensor 6 is judged as not having paper on paper tray, sheet feed section 12 is set to terminate to retry treatment. As a result, control unit is judged as not having paper on paper tray, it is not to be blocked without paper supply, even if there are the flase drop without paper Survey, the generation blocked without paper supply is not detected yet.

In the case where size is hybrid, the size being placed on paper tray (original copy pallet 11) is various, however it is not limited to All of paper is by the detectable size of linear transducer 7.Therefore in the case where size is hybrid, length can be independent of Sensor 7 and can be carried out accurately to whetheing there is paper on paper tray (original copy pallet 11) in the repetition of intermittent paper supply exactly Ground confirms again.

Additionally, the sheet feeding-device 100 of implementation method may be embodied in original document feeder 1 or image processing system (compounding machine 101).The sheet feeding-device 100 of implementation method, will not complete not settled based on placed paper and also judge For the detection that unnecessary the retrying of the error detection of the paper also placed is processed or blocked without paper supply.It is, therefore, possible to provide A kind of easy-to-use original document feeder 1, image processing system (compounding machine 101) for user.

More than, embodiments of the present invention are illustrated, but the scope of the present invention is not limited to this, and can be with Various changes are added within a range not departing from the gist of the invention to implement.

The present invention can be used in using motor to carry out the paper feed of paper supply.

Claims

1. a kind of sheet feeding-device, it is characterised in that comprising paper tray, place sensor, sheet feed section, delivery section, paper supply Sensor, control unit and linear transducer；

The paper tray places one or more paper；

The sensor of placing includes the actuator acted placement paper, its position according to actuator and exports difference, And it is arranged at the position that detection paper is placed；

The sheet feed section rotates paper supply rotary body so as to carry out the supply of paper being placed on the paper tray；

The paper that the delivery section conveying is supplied by the sheet feed section；

The feed in sensor is used to be sent out from the paper tray according to the paper supply motion detection paper of the sheet feed section；

The control unit is based on whetheing there is paper on paper tray described in the size detection of the output valve of the placement sensor, is based on Whether the output of the feed in sensor is supplied to according to paper supply motion detection paper, if the feed in sensor detects paper Rear end pass through then confirm it is described placement sensor output valve, the sheet feed section is carried out lower one page when being judged as having paper Paper supply action；

The linear transducer configuration is than the placement sensor upstream side；

The control unit the output based on the feed in sensor detect there is no paper supply when, carry out retrying treatment, though for Paper portion repeats the intermittent paper supply of stipulated number, and until feed in sensor is able to detect that paper, the intermittent paper supply refers to Paper supply action is carried out again after paper supply action is stopped, and confirms that described placement senses before each described intermittent paper supply starts The output of device, in the case where the described intermittent paper supply for having carried out the stipulated number can't but detect paper supply, judges It is to be blocked without paper supply, was detected before the arrival stipulated number in the case of not having paper on the paper tray, makes institute State sheet feed section terminate it is described retry treatment, be judged as there is no paper on the paper tray, be not described without paper supply blocking

The control unit is based on the output of the linear transducer, detects whether placed paper is more than specific length；

The control unit starts in the paper being only placed with more than the specific length in each described intermittent paper supply Before, the output valve of the linear transducer is confirmed rather than the placement sensor, do not place the regulation long to detect During more than degree paper, the sheet feed section is set to terminate described to retry treatment.

2. sheet feeding-device according to claim 1, it is characterised in that

Comprising configuration in the linear transducer than the placement sensor upstream side；

The control unit in the paper being placed with more than the specific length, before each described intermittent paper supply starts, Confirm the output valve for placing sensor and the linear transducer, in meeting following condition any one when, make described Sheet feed section retries treatment described in terminating, and the condition is：Output valve based on the placement sensor is detected on paper tray There is no paper, or the output valve based on the linear transducer detects the paper do not placed more than specific length.

3. sheet feeding-device according to claim 1 and 2, it is characterised in that the control unit is less than being only placed with During the paper of the size of the specific length, before each described intermittent paper supply starts, the placement sensor is confirmed Output valve in the case of not having paper on the paper tray is detected, makes the paper supply rather than the linear transducer Portion retries treatment described in terminating.

4. sheet feeding-device according to claim 1 and 2, it is characterised in that passed comprising the placement sensor, length Sensor and operating portion；

The operating portion receives the size hybrid setting of the hybrid size on the paper tray of different paper；

When the setting being read out under the size is hybrid is received by the operating portion, between the control unit is described in each Before having a rest property paper supply starts, the output valve for placing sensor is confirmed rather than the linear transducer, based on the placement In the case that the output valve of sensor is judged as not having paper on the paper tray, the sheet feed section is set to terminate described to retry place Reason.

5. a kind of original document feeder, it is characterised in that possess the paper supply dress described in any one in Claims 1-4 Put.

6. a kind of image processing system, it is characterised in that possess the paper supply dress described in any one in Claims 1-4 Put.